| Event: | Men's marathon |
| Games: | 2019 |
| Venue: | Parque Kennedy |
| Dates: | July 27 |
| Competitors: | 18 |
| Nations: | 14 |
| Win Label: | Winning time |
| Win Value: | 2:09:31[1] |
| Gold: | Cristhian Pacheco |
| Goldnoc: | PER |
| Silver: | José Luis Santana |
| Silvernoc: | MEX |
| Bronze: | Juan Joel Pacheco |
| Bronzenoc: | MEX |
| Prev: | 2015 |
The men's marathon competition of the athletics events at the 2019 Pan American Games took place on the 27th July on a temporary circuit around the Parque Kennedy in Lima, Peru. The defending Pan American Games champion is Richer Pérez of Cuba.
| World record | 2:01:39 | Berlin, Germany | September 16, 2018 | ||
| Pan American Games record | 2:12:43 | Caracas, Venezuela | August 28, 1983 |
| KEY: | bgcolor=ccffcc align=center | q | Fastest non-qualifiers | bgcolor=ccffcc align=center | Q | Qualified | NR | National record | PB | Personal best | SB | Seasonal best | DQ | Disqualified |
| Rank | Athlete | Nation | Time | Notes | |
|---|---|---|---|---|---|
| 2:09:31 | GR | ||||
| 2:10:54 | PB | ||||
| 2:12:10 | |||||
| 4 | 2:12:25 | PB | |||
| 5 | 2:12:54 | NR | |||
| 6 | 2:13:22 | ||||
| 7 | 2:13:59 | PB | |||
| 8 | 2:14:14 | ||||
| 9 | 2:17:18 | ||||
| 10 | 2:17:21 | PB | |||
| 11 | 2:17:33 | ||||
| 12 | 2:19:12 | ||||
| 13 | 2:20:15 | ||||
| 14 | 2:21:55 | ||||
| 15 | 2:27:15 | ||||
| 16 | 2:28:18 | ||||